Here are entered works on the keyboard family of musical instruments. Works on the keyboard as a part of musical instruments of any type are entered under Keyboards (Music).
Instruments that establish bodies politic or other organizations, or that grant rights, liberties, or powers to their citizens or members and for the governing documents that set forth the basic terms of a corporation's existence.
--subdivision Instruments under individual scientific or technical disciplines for discussions of the instruments employed in those fields, e.g. Nuclear physics--Instruments; also phrase headings for types of instruments; and headings for individual instruments
Here are entered general works on instruments with strings that are bowed, hammered, or plucked and that do not have keyboards.Works on bowed stringed instruments are entered under Bowed stringed instruments. Works on plucked stringed instruments are entered under Plucked instruments.